污水ClO_2消毒副产物及生物毒性控制  

Toxicity and removal of chlorine dioxide disinfection by-products of wastewater

作　　者：王建玲[1] 王宝贞[1] 王琳[2] 

机构地区：[1]哈尔滨工业大学水污染控制中心,哈尔滨150090 [2]中国海洋大学,山东青岛266003

出　　处：《哈尔滨工业大学学报》2006年第11期1977-1980,1985,共5页Journal of Harbin Institute of Technology

摘　　要：污水二氧化氯(C lO2)消毒是目前控制污水生物学污染的推荐工艺,但其在杀灭水中细菌及病毒的同时,也会带来消毒副产物,这些状态稳定的副产物进入受纳水体,可能对生态环境造成严重的破坏采用离子色谱法和发光细菌法考察了污水C lO2消毒后副产物成分及其生物毒性,结果表明:C lO2消毒的主要副产物为无机物C lO2-,与消毒前污水相比,C lO2消毒/脱氯后污水的生物毒性明显增强,其生物毒性主要由C lO2-产生,且随C lO2-浓度的增大而增强此外,为降低C lO2消毒后污水的生物毒性,采用二价铁盐(Fe(Ⅱ))还原去除污水中残余C lO2-,得到了较好的去除效果,并有效地降低了污水的生物毒性.Wastewater disinfection with chlorine dioxide （ CIO2 ） is one of the recommended processes to control biological pollution in wastewater. It is most efficient in killing bacteria and viruses. However the disadvantage of chlorine dioxide is the undesired disinfection by - products. These ions are suspected to do harm to the receiving aquatic environment. The by - product formation and toxicity in wastewater after chlorine dioxide （CIO2 ） disinfection was explored by ion chromatograph and luminescent bacteria after exposure to a test sample. It was proved that chlorine dioxide （CIO2） disinfection could induce the toxicity of wastewater, and the toxicity of disinfected wastewater was mainly due to CIO2 , and the toxicity increased with CIO2 Furthermore, the effectiveness of ferrous ion （ Fe （ Ⅱ ） ） deoxidizing chlorite was studied. The result showed that Fe （ Ⅱ ） could effectively reduce CIO2 and lower the toxicity of wastewater.

关 键 词：污水消毒CIO2 CIO2^- 生物毒性 

分 类 号：X703[环境科学与工程—环境工程]